Denture brush



Oct. 17, 1933. F. J. TRAXL 1,930,57

DENTURE BRUSH Filed July 28, 1933 SNI@ Patented Oct. 17, 1933 UNITED STATES 'PATENTQFFiC-E l 1,930,571- DENTURE BRUSH Frank). Traxl, Chicago, Ill. Y Application July 2s, 1933. serial'No. 682,610vv 4 claims. (cris-,167i

their middle portionsto a generally U-'shape comi;

The invention relates to brushes and more particularly it relates to brushes especially constructed for cleaning removable dentures, bridges, plates, or the like. f

Owing'to the irregular con'iiguration of dentures and removable bridges itis dicult; if not impossible, to thoroughly clean the same with a single brush of ordinary construction and'it is an object of the invention toy provide-a brush of improved construction and novel configuration adapting it for easy manipulation and abrasive contact with all portions of theirregularbounding surfacesV of removable dentures and bridges including both lrelatively large curvedsurfaces and grooves of dentures. Y

Another object of the invention is the provision of a brush adapted to t'within both convex and concave surfaces such Aas the labial portions of dentures and is alsoadapted for insertion in the clasps of partial dentures in amanner to thoroughly clean thesame.

A further object of the inventi nfis the provision of a brush having a portion vof 'its handle curved in a manner to adapt thev brush for free manipulation'in deep depressed surfaces of dentures without contact of the handle therewith.

A still further object of the invention is the provision of an improved brush of the kind described which is simpleyeconomical.durable and satisfactory forits intended purpose.` v

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given.

To this end, my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the appended claim 1 forming a part hereof.

In theV drawing, wherein like reference characters indicate like or corresponding parts:

Fig. 1 is a view of the brush as it may be employed in cleaning the lower exposed surface of a full upper denture shown invertedfrom its normal position;

Fig. 2 is a longitudinal section through vthe brush and denture shown in Fig. l; and

Fig. 3 is a section along the line 3--3 of Fig. 2.

Referring new more particularly to the drawing, the brush comprises a handle 10 having a substantially inclined end portion 11 providing a pair of apertures 12 at one end and a pair of bristle carrying cores respectively iixedly mounted in the apertures. The cores each comprise two lengths of wire twisted spirally and bent near prising end sections 13 and 14 connected "by a crook or bend 15. The rear ends of the forwardly projectingportions 13`a're wedged in'position in the handle apertures 12 vwith the corresponding free ends of the sections 14 projecting rearwardly and terminating substantially oppositevtothe end ofthe inclined handlev portion 11. z' f L A plurality of bristles 16 of substantially uniform length are clamped betweenV the portionof the wires forming the coresections;13.- VThe sections 13 are curved downwardly'andzthespacebetween the sections is preferably slightly. greater 'than one-halfofthe length of the bristles; 16. As Ya result, the adjacent ends of the bristles 16 overlap substantially to provide a 'compact middle.

longitudinally extending portion fof substantial depth and width, the-upper surface of which is concave and the lower surface convexlongitudinally 0f the brush. 1 f p Lateral concavity-` and'convexity of-the upper and lower surfaces respectivelyl of the brush'is obtained by inclining the bends `or crooks 15 outwardly and-'upwardly and extending thesections A"14 rearwardly therefrom in spaced apart relation 'to and'above the adjacent-.sections 13. The'sections 111y are also Vcurved downwardly and. thereby provide for extending the'longitudinal concavity and-convex'ity of the upper.` and lower surfaces of thef-middleportion of the brushto the lateral edges thereof. "'Br'istle's 17\.are clampedfbetween'lr the wire comprising the crook 15 andthe sections 14, the lengths of the bristles gradually diminishing towardsV the free Vends of the sections 14.

The spacings of the sections 14 from the sections 13 with which they are connected is preferablyi.

such that there is tangential contact or slight overlapping of the ends of the contiguous bristles 16 and'll.

Asshown in Fig. 3 the core sections 14 are at an elevation such thatthe bristles have their;A p

upper and lower ends above the corresponding ends of the bristles 16 with the result that the top of the brush is concave laterally `and the bottom is convex laterally. The described arrangement and construction of the core sectionsggiV and bristles provides a brush having4 atop surface concave both laterally and longitudinally and a bottom surface similarly convex laterally and longitudinally. l

VAn inverted upper. denture 20 is shown ini.

Figs. 1 and 2 which provides a raised portion 21 bounded by relatively large convex and concave surfaces adapted for contact therewith ofthe corresponding concave and convex `brush surlio Y"to

` the like, and also in crevices such as the denture groove 22, accessibility to which is diicult or impossible in using a brush of ordinary con-v struction. r-

Thus, it will be seen that 1 have provided a' brush of the kind described providing :an upper surface which is concave both laterally and longitudinally and a lower surface whichris convexl both .laterally and longitudinally, thereby adapting the brush for use on relatively large correspondingly curved portions'of a. denture and which has its'lateral edges providing individual tapering circular brushes adaptedrfor insertion in recesses, small grooves and other interstices of dentures and bridges, or the like, in `combina,- tion with a handle havingan inclined portion `'adapting the brush for freetman-ipulation without contact. of the handle with the labial or other projecting portions of dentures.

@Having thus described my invention, it is obvious that various immaterial modiiications may be resorted to without departingfrom the spirit of the invention;Y hence, I do not wish to be limited to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned.

Wnatr claim as new and desire to secure by' Letters Patent is: Y y

. 1.- A denture brushv of .the kind described comprising a handle and a brush element, the` upper and lower surfaces of said element being respectively concave and convex laterally and longitudinallm the endy ofl the handleI adjacent the brush .element being inclined thereto and,` the `remainder of said handlebeingsubstantially parallel to saidelement; 1

2..A brush of -the kind described comprising a handle and-a brush elementgsaid element comprising a pair of generally U-.shapedkvbristle carnes' rying cores, each core having one stem mounted in the handle in spaced apart relation to the corresponding stem of the other core, the Ymiddle portion of each core being inclined outwardly and upwardly with the free end of the core extending rearwardly and terminating substantially opposite the end of the handle, and bristles so mounted on the coresthat the longitudinal middlerportion of the brush element is relatively thick and compact and the lateral edges are relatively thin. t

3. A brush of the kind described comprising ahandle and a brush element, said element cornprising a pair of generally U-shaped bristle car` rying cores, each core having one stem mounted in the handle in spaced apart relation to the corresponding rstemof the other core, the middle portion of `each core being inclined outwardly and' upwardly with the free end of each core extending rearwardly kand terminating substantially opposite the endof the handle, and bristles *so arranged on said cores that the middle longitudinally extending portionV ofthe brush elen `ment is relatively thickrand compact and they lateraledgeportions are thin and combine with saidvmiddle portion to provide a brush having its upper and lower surfaces respectively concave and convex laterally and longitudinally.

v '4. A denture brush of the kind described com- Yprisirlg a handle and a brush element, said brush element comprising a pair of generally U-shaped bristle carrying cores, each having a stem mounted on the handle, the middle portion of each core being inclined outwardly and upwardly and theother stem extending rearwardly and terminating substantially adjacent the end of the handle, themiddle portion of each of said stems being curveddownwardly, and bristles mounted on said cores, the. bristlesniounted on each inner stem being of substantial length and overlapping the corresponding bristles or the other inner stem, :thebristlesfon the middle portions of outside `stems of said cores gradually diminishing in length towards the free end of said stems, the length of said bristles` and arrangement of said cores being such that Ythe top surface of the' brush is concave both laterally and longitudinally and the bottom surface is `convex laterally and longitudinally.- Y

' FRANK J. TRAXL. 

